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The charge flowing in a conductor varies...

The charge flowing in a conductor varies with times as `Q = at - bt^2.` Then, the current

A

decreases linearly with time

B

reaches a maximum and then decreases

C

falls to zero at time `t =a//2b`

D

changes at a rate - 2b

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`I=(dQ)/(dt) = a-2bt`
`I = 0for t = (a//b) and (dI)//dt) = -2b`
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